Honestly. That's about right.
it takes a bunch of time to build and develop a car.
Davemapes started with his Goldfish. You can take the links to follow his development from 2001-7. MY 1966 FORMULA S PLYMOUTH BARRACUDA
And then when he got Josh's Dart, which was already a track car. The begining of developing and testing that out in '06 is here Zebra/Dart/Dodge/Dodge Dart/Road Race/Autocross
He got his racing license in 2010 and I think the first W2W races with his own car (the Dart) in 2011.
Links in this thread to some of the development since then. His screen name here is CPDave